Someone tried to tell me I was arrogant for knowing so much.

I said "I always considered the voluntary act of learning to be an admission of ignorance, making studiousness a virtue, so consider my collective knowledge at present to be the sum total of the number of instances in which I previously admitted my own ignorance and proceeded to rectify it. In other words, if I had a nickel of knowledge for every time I've said 'I don't know' in the past, I'd know THIS much."

They'd never considered knowledge as proof of work resulting from humble admissions of ignorance collected over the course of decades of opportunities.